Engine



Oct. 28, 17930.

H. GUNDAL ENGINE Filed May 14, 1928 Sheets-Sheet l P. H. GUNDAL ENGINE Filed May 14, 1928 3 Sheets-Sheetl 2.

Illu/RI-:

P. H. GUNDAL Oct. 2s, 1930.

ENGINE Filed May 14, 1928 5 Sheets-Sheet 3 gines 'in 4general leu't particularly to internal whereby one or more fof the cylindersor enployed exclusively lfor power Jpurposes.

ving the peculiar lfeatures of construction and zmode ofloperation'setfortli in-'tlie oliloW-ing' j description, fthe several novel features ofthe Aiin Eigure.

Patented Oct. 28, 1930 y PETER-11.GUNDAL,'for'Besromaulisseonusn'rrs .ENGINE applicati@ sied 'may 14,

-My invention relates to motive power eneombu-stion engines-audit has' for 'its object :to-improve the'eenstructien yof the same to the end that the `field-:of utility thereof shall be increased. It is also fain lolejfectof Vthis in# vention 'to provide a convertible internal ycomoust--ien-engine iI-Icl-udging two ormore cylinders, or engine units, so .organized and cone Vstrueted aste have capacity for adjustment :gine units-may be employed as air or vother :fluid pumping inea-ns AWhile bei/ng driven Ylo'y the other engine un't 'er' u-nits and whereby, under another -condition of ad] ustment, all -015i: the cylindersor 4engine lun-its -'may be .em-

vTo these ends `leaveprovided an irnproved 'convertible 'internal 4conileustion eng-ine ha'v- 'inventionbeing particularly pointed 4out :and l dei-ined in'tllefclairns at 4tlie'elese thereof.

the 'accompanying dra-Wings: j Figure 1 an""elevation`,`niere xefrfless ldiagrannnatic, 'o't a compressed `air system 1in-j cluding an internal combustionen'gine 4con--A structedin Iaccordance With my invention.

'Figure 2 is an end elevati shown in Figure 1. Y

'Figuretis acentral vertieal'sectio'nail vie-W, on a larger scale, of the cylinder-head valvefitti-ng hereinafter described, showing also a* partolftlie .upper yportion of the engi-'ne shown in Figure J1.

Figure i is a--plan View of some of the parts of the engine valve-controlling Ineclianismj on of the fenginey hereinafter described.

Figure '5 is an elevation ,ofthe ,parts shown Figure 6,1is Ya ldetail hereinafter described. Having .reference 7to fthefdrawings, 1.Y repre- 1 ,sents the crankease oltlnyimproved internal communication Ibetvveen `chamber 13 `oteaeh unit -9 is yieldinglyurged. downward( jat their upper ends, f abutment screws' y20 'stems.

including cylinder el. `mrinall rees. serieu No. 277,436.

cernloustion engine; 2 the crankshaft; 3,4,5V

1and 6 #the four cylinders .fo-f th'egengine *which are, as usual,cast in pairs, The tv'voeylind'ers 3- and 4 are'cast 'together and-are'lso integral.

with a head?, Wliile thetwo cylinders 5 and? lGare cast together anclarefalso integral with a liead'S.

vEach engine unlitincludes an `'intake 'valve- 9P1I1d'eXhuSt ,Win10, Figur@ .Centrellng 11 'and -exlraustport 12, respectively."

vtlie "compression :A rand its intakeport v As usual the stem 13 of each intake valve y byja spring Xliaustfva'lve 14, Wliilefthe stemV 15 of each e y urged downward "by 'a spring 16, the 'valves 9 fleeing Voperated "byjtlielusujal cam! actuated push-rods 1 7 'Wlii-l'e the valves 10 are opera-ted b these pusli-rods are fast ena anr 19 through the nsualge'aring, not

ends otvtlie valvelsfterns l13' and i154 of cyloperate directlyy vviith 'their push-rods 1'7 and A'18., thatis,-the push rods which Voperate"thesesteins are provided as usual, with adjustable `and cheek: 'nuts 21, ,the tops 'of 'the lieadsloi Jthe push-rod 'screvvs 520 f directly eiigaggi'ngtlie lower ends 'of vthe valve The -carns which operate all*V A '.llie push-'rods 17 .andl ofthe powerfunit a'leutnfientV blocks or shims '22 .anjd- Qfp'ivotally and :sldabjly ,mounted upon pests or. guides Q'hereins'liown `as pins proj upwardly from an attachment `loralreft@'Q5 iastened rigidly .in positionupon lthe engine franieby means of ascrewfai. ,As liereins'hownjthis racket .25 in .the iorm ein metal plate formedupon ,itsltop eidewit'h a groeve or Way 26 xvithjnrwlnehfjls Ineun'tedamslide 27, this lslide being formedV upon its opposite sides with vertical grooves 28 within whichht tail pieces 22 and 23 provided, respectively, on the abutment blocks 22 and 23.

Normally the outer free ends of thepivoted abutment members 22 and 23 occupy positions between the lower ends of the valve stems 13 and 15 of unit or cylinder 4 and; their respective push-rods so vthat vertical reciprocation ot said push-rods acts throughV the abutment members 22 and 23 to reciprocate the valve stems 13 and 15, thesaid abutment members 22 and 23 sliding vertically on theguide posts 24 so that theyi'ollow the movements of the push-rods.

46 is arranged the inner forked end of a lever ulcrumed at 51 on an arm 52 projecting from body 36. The outer end of lever 50 is also lforked' and embraces a block 53 slidably mounted upon a. rod 54 pivotally connected at its lower end to oneoi the arms oit the bell-crank lever 31. At its upper end the rod 54 has fast on it a stop collar 55 normally held against the top of block 53 by a spring 56 surrounding rod54 which bears at its lower end against an abutment collar 57 on rod 54 and at'its opposite end against the lower end oi block 53. Thus the vertically movable Vhen the slide 27 is moved inwardly `alohgmis connected with the slide 27, Figuresk 4 and the way 26 it acts through the tail pieces 22 and 23 to swing the abutment members-22 and 23 on the guide posts 24 outwardly from" their` positions betweenthe valve'stems and the push-rods, and since these abutment members 22 and 23lare approximately thesame in thickness asd the length ot movement or" thepush-rods 17 and 13, it'will be clearnthat l when the abutment members are thus placed in their inoperative positions the valve stems Y V13yand 15 will remain at rest although thev push-rods continue to be reciprocated;

The sli le 27 has rigidlyl iastened inner end of a rod 29-whose outer end is piva bracket 33 fastened to the crank case 1 of .and valvel 41 are ,usually moved verticallyV otally vconnected at 30, Figure l2, to one arm etaV bell-crank lever 31 ulcrumed at 32 upon.

the engine.

-It will be clear that vibration ol `bell-crank I lever 3l will shift slide on the bracket 25 5,1through the medium 'or' rod29, bell-crank l31, rod 54 and lever 50 so that when said stem 44 is .screwed downwardly to open valve 41 the.slide27, .Figures V4 and 5,l is moved inwardly on the bracket 25 thereby throwing valve stem 44 ,the abutment members 22and 23 outwardly y into their inoperative positions. Also it will be clearlthat when the valve stem 44 is screwed upwardly to close the valve 4,1 it operates through lever 50, spring 56, abutment collar 57, rod 54, bell-crank Y31 and rod 29 to move the slide-27 outwardly thereby restoring the to itthe abutment members23 to their operative positions: between their valve stems and push- K IOds. Y j -m As will .later appear,` thevalve. stem 44 while the engine is in operation and'itwill ordinarilyfor frequently happen' that while the valve44 is being closed and-the abutment so as to swing the abutment members 22 and `,members 22 vand 23 are being yieldingly'urged 23 into and out oftheir operative positions.

The compression chamber 13 oi the cylinder orV unit 4 has its topp wall made with aY threaded aperture, Figure 3, into which is p permanently screwed a bushing` 34 that is v interiorly threaded to receive within it an exteriorly threaded nipple 35 provided on the body 36 of an attachment ittin Vbody 36 is madewith three ports 33, 39 and The f 40, the port 38 being controlled by a valve 41; the port 39 being controlled by an out-` wardly opening check valve 42, and the port n 40 being controlled by an inwardlyv opening kcheck valve 43. The valve 41 normally lits against a seat 43 providedl at the lower end of port 36 -and'is made with a. stem 44 extending upwardly through a stuffing boX 45, provided at the middle or" the upper portion of, the body 36, to the exterior ol' the latterwhere its upper end isprovided with ahand wheel 46. The stem 44 is made with screw Ythreads 47 in engagement with threads provided at, 43 on body 36 so that by rotation oi hand wheel 46, stem 44 and valve 41, the latter may be moved vertically toward or from its seat 43 to open or close the port 38.

' Gutsideof the body 36 the valve stem 44 n is provided with a collar 49 between which and the inner end of the hub of hand wheelA toward their operative positions by the spring 56, thejoutcr-freevend portions of thesaid abutment membersiwill first come -to bear against thesides of thevertically reciprocating p ush-rods 17 4and13, butowing tothe `yielding characteristicot the spring 56 this will not interrupt thevupwardcmovement of stem` 44 and, as each push-rod comes into position at the limit of its downward movement, the spring 56 will snap the abutment members 22 and 213 into position under their valvestems 13 and l15, respectively. .In order to facilitate` theentranceo each abutment member between its lvalve stem and push-rod during this return movement its outer end `'portion is Vpreferably beveledor made wedgeshaped as shown at 56, Figure 6 showing a end'view. p .l y

LThe port 39 of the litting 37 is threaded 'to receive within it the exteriorly threaded twopartvalve-.holder 58 within which is provided a'seat 59 for the check valve 42, while the port 40 is threadedto receive within it the valve holder 59 'formed with a seat 6() for the check valve 43.

rThe check valve 43 .is'made with a stem 61 I lmao `against guide- 62 and at-its opposite end against anfabutment'washer orv collar 64 *whichl is held'onlthe V'stein by apin 65. \""The'*valve 42fis 'made with a depending 5 stenr'66V slidably mounted Vwithin `a" guide 67 Q that fis part of "theflower section of the two- `part holderl` V58, r and I upward movement `of --valve 42 4is liinitedby a stop collarror washer "63 held on Stem 66 by a pin-69;

'flllhfieuppersectioi'ijl of the two-part lcheck `valve Yholder A'8"V is made withv an `outlet port Y connected by a nipple 71, elbow 7 2, nipple,

73, -coupling74 and pipe line 75 with a storage tank 7 6, Figures l and 3. j

In the pipe line 75 I provide a safety valve 77 and pressure gage 78.

The storage tank 76 is provided with an outlet controlled by a valve 79 .and saidvalve may have connected with it one end of a flexible pipe or hose 80.

When the valve 41, Figure 3, occupies its closed position as shown the abutment yniemtheir inoperative positions thus putting out' of action the two valves 9 and 10 of cylinder or unit 4 at the same time that the valve 41 is opened.

It follows, therefore, that the reciprocatory movements of the piston (not shown) of unit or cylinder 4 will operate to draw air into fitting 37 and compression chamber 13 through port 40, past check valve 43, on each down stroke of the piston, and to force air from compression chamber 13 and fitting 37,

ing of air through port 39, past valve 42 and into pipe line 75 which delivers it into the tank 76.l Thus with valve 79 closed and the cylinder or unit 4 operated as a pump by the other three cylinders or units of the engine, it will continuously pumpair from'the atmosphere into tank 76. When the pressure within the tank 76 reaches the point for which the safety valve 77 is set the excess air pumped toward tank 76 will escape at said safety valve 77.

When it is desired to discontinue the pumpto tank 76 by the engine the valve 41 is screwedupwardly into its closed position whereupon cylinder or unit 4 will cease' tooperate as an air pump and will be restored to operation as a power unit. In this way the unit 4 is converted at will and while the engine is in operation, from a power unit into a fluid pumping unit that is operated by the remaining mechanism of the engine, and from a fluid pumping unit back to a power unit again.

' IFromtheabove-description it -will be. clear `f that-the' engine yherein shown` and described Y may be the rpropellinginotoro'f` an automofbile, or other motor propelled vehicle, and

vthat the tank 76v maybe installedupon that vehicle. AThus-l `may provide aportable compressed Aair supplying system @incorporated i "in-"an automobile, or other motor propelled vehicle, whose propelling motor is, as above 'i described, convertible sothat lit can be made A "to serve ftwopurposes, viz., as. a power driven :air compressor pumpI andas a vehicle".` profpellingmotor. f

In practice of my invention I have incorpora'ted thesame in 2in-'automobile'with'thogo y free'iendI of the flexibleA hose; or lpipe V8() yequipped with apneumaticallyactuated tool y ffoncuttingstone, the usual fcourse'of profcedurejbeingfto utilizethe engine inits entirety-to' propel the vehicle thus equipped to the location where the'stone'cutting yis to Vbe don'e,'and then after stopping-'the-'vehicle and throwing out the clutch thereof, openy ing vthe valve 41 while the engine is in operation and proceeding withV the' stone cuttin operations, the pneumatic tool -(not shown) at the `freeend. of the pi'pe`80 being operated by the compressed air maintained in tank 76 bythe converted-engine' whlethelcuttinglop- Y erations are carried out. v

V-Whatl claim is:

Acharacter described 'comprising a'pluralityV of enoiiie units each including a cylinder Y'havjing la head made-with; a ber 4'an auxiliary `port conimunica'tingv with t' f 12J-in internal combustion engine AoftheV compression' chain-f geen a conduit connecting said storage' tank with conduit opening toward said-tank; an air f "i-i'i'let port connected with said-auxiliary port; :ached-:valve lcontrolling said air inlet port and opening toward'said auxiliary-port; la

cation;A between the auxiliary/'port and both sai-d air inlet port and'said'conduit, and means for renderingthe intake and exhaust valves of said unit inoperative and'maintai'ning the eontrol'lingsaid auxiliary port is opened,

ing afcra'nk shaftga'plurality-ofengineiunits y'eaehf ineludfn'ig a cylinder havi-ng intake and weX'h-aust -1 controlling valve's 1 means. through which the intake andSex-haustfvalves-ofeach `means of one 'of said; iunits fleeing adjustable :to prov-ide forrenderingfits valves inoperkysaidl unit 5' an inwardly lopening check vvalve inlet; an independent "auxiliary: air outlet 1 fvalve controlling. .said auxiliary outlet,

'funitsy aI stoiagefptank for compressed air; v

saidV auxiliary port; a* check Lvalve in sai-df normally, closed valve Veon-t'rolllin'g communi-v samei-ntheirclosed positions when the v'valve` Yativef; 'an independentauxiliary air. inlet forforrsaid' unit; an outwardly opening 'check An internal combustion enginecomprisl -control-'li-'ngsaid :independent auxiliary airk f said cylinder, said means being adjustable', to

establishsaid Communication when the oper# ating means ior the intake and ,Y exhaust valves of said unit is adjusted to render the lconneeted with 'the auxiliary port lof said compression chamberyan inwardly opening checklvalveucontrolling ysaidair. inlet vport;

:anair'r outlet port connected vwith theauxiliaryipoit of said compression.chamber,and

an outwardly openingeheck 'valve eontrol- 1* same inoperative; and means connecting said Y-ling t heflow of yair throughsaid auxiliary two .adjustable meanstov adjust them simul- 3v. An internal combustion engine. comprising a crank shaft; aV plurality of engine units each including a cylinder having intake and u exhaust controllingv valves; means through .which the intake and exhaust valves of each unit are operated by said shaft, the said means of one of said units being adjustable to :provide'f'or renderingjits valves inoperative; an independent auxiliary air inlet for .said unit; an inwardly opening check valve con-trolling Y said independent auxiliary air `,inlet;j an independent auxiliary,V air outf. as

let for said unit, an outwardly opening cation between said auxiliary inlet and outlet and said cylinder, ysaid means being adated member through which said valve operfating means ,andV the valve controlling l said compression port are ysimultaneo'usly`- ad justed'- i.

j PETER GUNDAL.'

check valve. controlling said auxiliary air l outlet, and valve meanscontrolling communirender the same inoperative; and a single manually actuated member for simultaneously adjusting said communication controlling fine units thereof, of operating means for lsjaidvalves that is'adjustable to render the same either operative or inoperative; a com- Y pression chamber for said unit made with an Y auxiliary port; 'a normally closed valve con-` trolling said port; an auxiliary air inlet port .valve vmeans and the valve operating means airoutlet port; anda single manually `actuj lso intake and exhaust valves of'one of the enj i connectedwithgthe auxiliary port of said, V

compression chamber, an inwardly opening*` check valve controlling said air inlet port;

`an air outlet port connected with the aux iliary portvoi1 said compression chamber, and j an outwardly opening check valve control-VV ling'the flowof air through said auxiliary air .v outlet port; and means operatively connected with said adjustable means and with vsaid f normally closed valve toemovethe latter valve `from its seat andto simultaneously adjustY v said adjustable means to render said` operating means inoperative. v Y j 5. In an internal combustion engine of the Character described the combination with the. Y

1 intake and `exhaust valves of one of the en gine units thereof, of operating means forv said valves thatvis adjustable to render they` same either operative or inoperative; a oom-l pression chamber for said unit made with an.

auxiliary port; a normally closed valve controlling lsaid port; an auxiliary air inlet port 

